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" UNITED STATES FRANK EQ SAGENDORPI'I, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONAEHALF TO- PATENT OFFICE.

E. STARR LLOYD, OF SAME PLACE.

SHEET-METAL ROOFING.

SPECIFICATION forming part of Letters Patent No. 416,68*?, dated December 3, 1889.

V Application led October Il, 1889. Serial No. 326,018. (No model.)

To all whom it may concern:

Be it known that l, FRANK E. SAGENDORPH, of Chicago, in the countyvof Cook and State of Illinois, have invented certain new and useful Improvements in Sheet-Metal Roofing, of which the following is a clear, full, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in wl1ich Figure l is a side elevation of a portion of a building, showing a sheet-metal roof applied thereto embodying the features of my invention. Fig. 2 is a perspective view in detail of a portion of the adjacent metal sheets, including the standing seam and fastening device. Fig. 3 is an end view of the same as it appears .when on an inclined roof. Fig. 4 is a perspective view of the same looking toward the opposite side of the standing seam from thatshown in Fig. 2. Fig. 5 is a perspective view in detail of a portion of one of the roofsheets, showing the position of one of the fastening-cleats when partially adjusted in position. Fig. 6 is a like view from the opposite side of the seam, showing a step further in the process of adjustment of the cleat. Fig. 7 is an end view of the same, showing the adjacent sheet placed in position ready to be secured by the fastening-cleat. Fig. 8 is a perspective View of one of the fastening-cleats,

and Fig. 9 is a like view of a modification thereof.

Corresponding letters of reference in the different figures designate like parts.

My invention has reference to that class of .sheet-metal roofs in which the adjacent metallic sheets are attached to each other by means of what are commonly known as standing seams; and my object is to so construct and attach al cleat or fastening that it may be placed in position upon the flange of a given sheet and nailed to the roof before the adj ustment of the next succeeding sheet, after which it may be bent thereover to lock said last-named sheet thereto.

My invention therefore consists in the construction of the cleat' and the combination thereof with the standing seam of a sheetmetal roof, substantially in the manner hereinafter more particularly described and claimed.

means of the letter C.

Referring to the drawings, A, Fig. l, represents the building, B the roof-frame, and C the sheet-metal roofing-.plates attached there- In order to designate the adjacent sheets in the other iigures, so as to describe their mode of attachment and avoid confusion, Iv

Assuming that the sheets are laid from left to right, as is the usual practice, a double flange c c is formed upon the right-hand edge of the sheet, the flange c being only about half the width of the iiange c.

My improved cleat D, which is formed from a single piece of sheet metal split at d, and provided by preference. with va short perforated strip d and a longer strip d2, is attached i to the sheet C by bending its broad end d3 upwardly at about the beginning of the cut d and inserting the said portion between the fianges c c', as clearly shown in Fig. 5, when v the part d is nailed to the roof, as shown at d4,

Figs. 5, 6, and 7. The part d2 is thence bent upwardly around the flange c-, as shown in Fig. 5, and thence downwardly, as shown in Figs. 6 and 7. All of the cleats throughout the length of the roof being thus placed, nailed, and bent at proper distances from each other, as shown at the right in Fig. l, the next sheet C which is provided with corresponding iianges cies, is then placed in position with the flanges c2 c3 overlapping the vertical iianges c c and that portion of the part d2 which is bent over the flanges c c', as stated. This stage of the construction is clearly shown in Fig. 7. The remaining portion of the part cl2 in each of the cleats D is then bent upwardly and over the fianges c2 c3, as shown in Figs. 1 to et, inclusive, and indicated in dotted lines in Fig. 7, thereby locking the adjacent sheets firmly together, while opportunity is afforded for the free expansion and contraction of the metal.

I prefer in constructing the cleatD to form a double crimp therein, as shown at d5, Figs. 7 and 9. This imparts great strength to the cleat and prevents it from tearing when the parts d d2 are drawn in opposite directions.

The advantages derived from using my improved cleats are that they may be placed in position and the seam compressed with crimp- IOO ing-tongs before nailing the cleat and after- Ward placing the adjacent sheet in position. This cannot be accomplished in constructions heretofore employed Without loosening the cleat from the roof. Another advantage is that a roof may be laid much more rapidly when my improved cleats are employed than if they were not used.

Having thus described my invention, I elaiml. The combination, with the vertical flanges comprising the standing seam of a sheet-metal roof, of a split cleat having one of its members or strips attached to the roofboards, its base or Wide end inserted between the inner vertical anges of one sheet, and the other member bent outwardly around said .flange and thence outwardly over and around the overlapping flange of the adjacent sheet,

whereby the adjacent sheets are locked to each other and attached to the roof-frame, substantially as shown and described.

2. The combination, with the vertical flanges c c and c2 c3 of the adjacent sheets of a sheet-metal root', of the split cleat D, secured to the roof-frame and bent and interlocked, as described, substantially as specified.

3. The cleat D, provided with strips or tongues d d2 and the doubled-crimped part d5, substantially as shown and described.

In testimony whereof I have signed this specification, in the-presence of two subscribing Witnesses, this 23d day of September, 1889.

FRANK E. SAGENDORPH.

Vfitnesses:

D. H. FLETCHER, J. HALPENNY. 

